ESMF_RegridGetIwts Subroutine

      subroutine ESMF_RegridGetIwts(Grid, Mesh, Array, staggerLoc, &
           rc)
!
! !ARGUMENTS:
      type(ESMF_Grid), intent(inout)         :: Grid
      type(ESMF_Mesh), intent(inout)         :: Mesh
      type(ESMF_Array), intent(inout)        :: Array
      type(ESMF_StaggerLoc), intent(in)      :: staggerLoc
      integer, intent(out), optional         :: rc
!
! !DESCRIPTION:
!     The arguments are:
!     \begin{description}
!     \item[Mesh]
!          The mesh.
!     \item[Array]
!          The grid array.
!     \item[{rc}]
!          Return code.
!     \end{description}
!EOPI
       integer :: localrc
       logical :: isMemFreed

       ! Logic to determine if valid optional args are passed.  

       ! Initialize return code; assume failure until success is certain
       localrc = ESMF_RC_NOT_IMPL
       if (present(rc)) rc = ESMF_RC_NOT_IMPL

       ! Make sure the srcMesh has its internal bits in place
       call ESMF_MeshGet(Mesh, isMemFreed=isMemFreed, rc=localrc)
       if (ESMF_LogFoundError(localrc, ESMF_ERR_PASSTHRU, &
         ESMF_CONTEXT, rcToReturn=rc)) return

       if (isMemFreed)  then
           call ESMF_LogSetError(rcToCheck=ESMF_RC_OBJ_WRONG, & 
                 msg="- Mesh has had its coordinate and connectivity info freed", & 
                 ESMF_CONTEXT, rcToReturn=rc) 
          return 
       endif

       ! Call through to the C++ object that does the work
       call c_ESMC_regrid_getiwts(Grid, Mesh, Array, staggerLoc, &
                                   localrc)
       if (ESMF_LogFoundError(localrc, ESMF_ERR_PASSTHRU, &
         ESMF_CONTEXT, rcToReturn=rc)) return

      rc = ESMF_SUCCESS

      end subroutine ESMF_RegridGetIwts